It looks alright to me too but I have always been leery on those types of things. I saw an ammonia thermometer once and was curious but I am not willing to mess with it lol. Sometimes it is good to step out of the box though! If you get it please update us on its accuracy

__________________~LM~ (My tanks)When in doubt, do a water change!If someone gives good advice, thank them with some rep points!

Also with mention of Saltwater. The calibration solutions they give you are a little low. Typically with saltwater you calibrate with 7.0 and 10.0 solution. However, the range went to 14 which is plenty high enough. Hard to say.